Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

No matter how little or how much you use me, you change me every month. What am I?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

Take away the whole and some still remain. What is it?

When we see 2 but call 10?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

What's the best place to go shopping in the ocean?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

I look at you, you look at me, I raise my right, you raise your left. What am I?

Rearrange the letters in "new door" to make one word.